My goal:
In an aspect, i'd like to be able to extract/retrieve all annotated parameters from matching functions, no matter how many there are. (and then apply some treatment on but it's not the scope of this question)

Hi Fred, yep you're right. That is what i finally implemented yesturday evening. It was not working at the beginning, but because i made another mistake (i annotated the parameters in the method in both the interface and the implementation class, and it seems to parasite the normal behaviour. I've removed the annotation from the interface and it works fine. Thanks for your help.
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kijMay 15 '12 at 8:05